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    Low-field NMR device for measuring the water content of solids and slurries
    1.
    发明授权
    Low-field NMR device for measuring the water content of solids and slurries 有权
    用于测量固体和浆料含水量的低场NMR装置

    公开(公告)号：US09383420B2

    公开(公告)日：2016-07-05

    申请号：US13818712

    申请日：2011-08-30

    申请人： Sami Virtanen ,  Veli-Pekka Viitanen

    发明人： Sami Virtanen ,  Veli-Pekka Viitanen

    IPC分类号： G01R33/28 ,  G01R33/44 ,  G01N24/08 ,  G01R33/381

    CPC分类号： G01R33/28 ,  G01N24/08 ,  G01N24/081 ,  G01N24/082 ,  G01N24/085 ,  G01R33/381 ,  G01R33/44 ,  G01R33/445 ,  Y02A90/344

    摘要： A Nuclear Magnetic Resonance (NMR) apparatus and method for measuring the water content of samples has a device to produce a main magnetic field; a sample receiving space within a main magnetic field; a device to excite a measurable RF magnetization to a sample placed into the sample receiving space at an operating frequency defined by the main magnetic field; a device to measure the RF signal produced by the excited sample; and a device to determine the water content in the sample based on the RF signal. The sample receiving space is capable of accommodating a sample having a volume of at least 0.5 dm3, and the device to produce a main magnetic field has a resistive electromagnet which is adapted to produce a main magnetic field corresponding to an operating frequency of 400-2000 kHz.

    摘要翻译： 用于测量样品含水量的核磁共振（NMR）装置和方法具有产生主磁场的装置; 在主磁场内的样本接收空间; 以由主磁场限定的工作频率向放置在样品接收空间中的样品激发可测量的RF磁化的装置; 用于测量被激发样品产生的RF信号的装置; 以及基于RF信号来确定样品中的含水量的装置。 样品接收空间能够容纳体积为至少0.5dm 3的样品，并且用于产生主磁场的装置具有电阻电磁体，其适于产生对应于400-2000的工作频率的主磁场 千赫。

    LOW-FIELD NMR DEVICE FOR MEASURING THE WATER CONTENT OF SOLIDS AND SLURRIES
    2.
    发明申请
    LOW-FIELD NMR DEVICE FOR MEASURING THE WATER CONTENT OF SOLIDS AND SLURRIES 有权
    用于测量固体和液体的水含量的低场NMR设备

    公开(公告)号：US20130154644A1

    公开(公告)日：2013-06-20

    申请号：US13818712

    申请日：2011-08-30

    申请人： Sami Virtanen ,  Veli-Pekka Viitanen

    发明人： Sami Virtanen ,  Veli-Pekka Viitanen

    IPC分类号： G01R33/28 ,  G01R33/44

    CPC分类号： G01R33/28 ,  G01N24/08 ,  G01N24/081 ,  G01N24/082 ,  G01N24/085 ,  G01R33/381 ,  G01R33/44 ,  G01R33/445 ,  Y02A90/344

    摘要： A Nuclear Magnetic Resonance (NMR) apparatus and method for measuring the water content of samples has a device to produce a main magnetic field; a sample receiving space within a main magnetic field; a device to excite a measurable RF magnetization to a sample placed into the sample receiving space at an operating frequency defined by the main magnetic field; a device to measure the RF signal produced by the excited sample; and a device to determine the water content in the sample based on the RF signal. The sample receiving space is capable of accommodating a sample having a volume of at least 0.5 dm3, and the device to produce a main magnetic field has a resistive electromagnet which is adapted to produce a main magnetic field corresponding to an operating frequency of 400-2000 kHz.

    摘要翻译： 用于测量样品含水量的核磁共振（NMR）装置和方法具有产生主磁场的装置; 在主磁场内的样本接收空间; 以由主磁场限定的工作频率向放置在样品接收空间中的样品激发可测量的RF磁化的装置; 用于测量被激发样品产生的RF信号的装置; 以及基于RF信号来确定样品中的含水量的装置。 样品接收空间能够容纳体积为至少0.5dm 3的样品，并且用于产生主磁场的装置具有电阻电磁体，其适于产生对应于400-2000的工作频率的主磁场 千赫。

    METHOD AND APPARATUS FOR VARYING ADAPTIVELY PULSE INTERVAL IN NMR-BASED WATER CONTENT MEASUREMENT
    3.
    发明申请
    METHOD AND APPARATUS FOR VARYING ADAPTIVELY PULSE INTERVAL IN NMR-BASED WATER CONTENT MEASUREMENT 有权
    基于NMR的水含量测量方法和装置改变适应性脉冲间隔

    公开(公告)号：US20130147482A1

    公开(公告)日：2013-06-13

    申请号：US13818823

    申请日：2011-08-30

    申请人： Veli-Pekka Viitanen ,  Sami Virtanen

    发明人： Veli-Pekka Viitanen ,  Sami Virtanen

    IPC分类号： G01R33/44 ,  G01R33/383

    CPC分类号： G01R33/448 ,  G01N24/08 ,  G01N24/082 ,  G01R33/383

    摘要： The invention relates to a NMR method for determining moisture content of a sample, in which method a sample is objected to a magnetic DC-field, the sample under magnetic DC-field is objected to a sequence of excitation pulses in RF-frequency with pulse interval for exciting hydrogen nuclei, and NMR signal of the excited hydrogen nuclei is measured. In accordance with the invention spin-lattice relaxation time is estimated for the sample, and pulse interval is adjusted longer than the estimated spin-lattice relaxation time.

    摘要翻译： 本发明涉及一种用于确定样品水分含量的NMR方法，其中将样品对象为磁DC场，其中在DC-场磁场下的样品被反射成具有脉冲的RF频率的激发脉冲序列 激发氢核的间隔和激发的氢核的NMR信号。 根据本发明，对样品估计自旋晶格弛豫时间，并且调整脉冲间隔比估计的自旋晶格弛豫时间长。

    Method and apparatus for varying adaptively pulse interval in NMR-based water content measurement
    4.
    发明授权
    Method and apparatus for varying adaptively pulse interval in NMR-based water content measurement 有权
    在基于NMR的水含量测量中改变自适应脉冲间隔的方法和装置

    公开(公告)号：US08823377B2

    公开(公告)日：2014-09-02

    申请号：US13818823

    申请日：2011-08-30

    申请人： Veli-Pekka Viitanen ,  Sami Virtanen

    发明人： Veli-Pekka Viitanen ,  Sami Virtanen

    IPC分类号： G01V3/00 ,  G01R33/383 ,  G01N24/08 ,  G01R33/44

    CPC分类号： G01R33/448 ,  G01N24/08 ,  G01N24/082 ,  G01R33/383

    摘要： The invention relates to a NMR method for determining moisture content of a sample, in which method a sample is subjected to a magnetic DC-field, the sample under magnetic DC-field is subjected to a sequence of excitation pulses in RF-frequency with pulse interval for exciting hydrogen nuclei, and NMR signal of the excited hydrogen nuclei is measured. In accordance with the invention spin-lattice relaxation time is estimated for the sample, and pulse interval is adjusted longer than the estimated spin-lattice relaxation time.

    摘要翻译： 本发明涉及一种用于测定样品的水分含量的NMR方法，其中样品经受了一个磁性DC场，磁性DC场下的样品经受脉冲序列的RF频率的激发脉冲序列 激发氢核的间隔和激发的氢核的NMR信号。 根据本发明，对样品估计自旋晶格弛豫时间，并且调整脉冲间隔比估计的自旋晶格弛豫时间长。

    Imaging system functioning on submillimeter waves
    5.
    发明授权
    Imaging system functioning on submillimeter waves 有权
    成像系统在亚毫米波上工作

    公开(公告)号：US06242740B1

    公开(公告)日：2001-06-05

    申请号：US09151325

    申请日：1998-09-11

    申请人： Arttu Luukanen ,  Heikki Sipila ,  Veli-Pekka Viitanen

    发明人： Arttu Luukanen ,  Heikki Sipila ,  Veli-Pekka Viitanen

    IPC分类号： H01L310232

    CPC分类号： H04N5/30 ,  G01J3/2823 ,  G01J5/0837 ,  G01J5/20 ,  G01S3/784 ,  G01S13/887 ,  G01S17/89 ,  G01V8/005

    摘要： The invention relates to detection performed over millimeter and submillimeter wavelengths, especially to imaging solutions functioning over a submillimeter-wavelength range. The system of the invention uses detectors, comprising antenna coupled bolometers together with wavelength selective optics. The detector matrix is preferably curved for reducing the number of imaging errors. In order to provide a curved detector matrix, the detector matrix is constituted by flat submatrices, each being provided with one or more integrated antenna coupled bolometers. The detectable frequency range is preferably limited in two stages, first by means of wavelength selective optics and secondly by means of the operating band of the antenna of an antenna coupled bolometer. In order to focus the incoming radiation on bolometers, the bolometer substrate is fitted or the surface or interior of the bolometer substrate is provided with a bolometer lens or a corresponding optical element in alignment with each bolometer.

    摘要翻译： 本发明涉及在毫米波和亚毫米波长上执行的检测，特别涉及在亚毫米波长范围内运行的成像解决方案。 本发明的系统使用检测器，其包括与波长选择光学器件一起的天线耦合辐射热计。 检测器矩阵优选是弯曲的，以减少成像误差的数量。 为了提供弯曲的检测器矩阵，检测器矩阵由平坦的子矩阵构成，每个子矩阵都具有一个或多个集成的天线耦合辐射计。 可检测的频率范围优选地分为两个阶段，首先通过波长选择光学器件，其次通过天线耦合测辐射热计的天线的工作频带来限制。 为了将进入的辐射聚焦在测辐射热计上，测辐射热计基片被装配或测辐射热计基板的表面或内部设置有测辐射热量计透镜或与每个测辐射热计对准的相应的光学元件。